because they are at higher altitudes in the mountains and its always colder up there. Also when clouds are forced up and over mountains they drop precepitaion.
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Ohio represent

in a nutshell: warm, moist pacific air gets dragged up over the mountains by the prevailing westerly winds. As this happens, the warm air cools and moisture condenses out of it in the form of rain or snow, much like a cold glass frosts over when its placed in a warm room.
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'Dude, check out this nasty gouge.'
'Your mom has a nasty gouge.'

Yeah, Alpentalik is so right about the cascades. High temperatures are barely ever lower than 20F or so in the ski areas. Thats why we are known for 'cascade concrete.' We get a ton of snow, but also get our share of rain on the mountains.

--If you give a man fire, It will keep him warm for a day. If you light him on fire, he will be warm for the rest of his life--